It seems like it’d be no different than eating SpaghettiOs or even canned ravioli from Chef Boyardee. Heinz have seemingly stuck macaroni & cheese into a tin can and decided to sell it online.
It’s being sold on Amazon and there is a description provided by Heinz that says;
“A simple touch or two can make Heinz Macaroni Cheese even tastier. Heinz Macaroni Cheese. Made with a creamy cheese sauce.”